Patent · US Expired

Electrical circuit for actuation of the relays of a fuel pump

US4404939A · kind A · utility

6Cited by

3References

7Claims

0Family size

Assignee

Kostal of America, Inc. · US

Inventors

Marwin Kinzl · Kierspe, DE
Eduard Bergmann · Lüdenscheid, DE

Key dates

Filing date	Aug 10, 1981
Grant date	Sep 20, 1983
Priority date	—
Expiry date	Aug 10, 2001

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D31/009
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An electrical circuit for controlling the operating of the relay of a fuel pump depending on the number of revolutions of the motor supplied by the fuel pump, whereby the fuel pump is cut off if the minimally permissible time interval being ignition pulses falls short, i.e., the number of revolutions of the motor exceeds an established value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.